1587047 has 8 divisors (see below), whose sum is σ = 1978752. Its totient is φ = 1236600.

The previous prime is 1587011. The next prime is 1587067. The reversal of 1587047 is 7407851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1587047 - 2⁸ = 1586791 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10229 + ... + 10382.

It is an arithmetic number, because the mean of its divisors is an integer number (247344).

2^1587047 is an apocalyptic number.

1587047 is a deficient number, since it is larger than the sum of its proper divisors (391705).

1587047 is a wasteful number, since it uses less digits than its factorization.

1587047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20629.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 1587047 is about 1259.7805364428. The cubic root of 1587047 is about 116.6442306063.

The spelling of 1587047 in words is "one million, five hundred eighty-seven thousand, forty-seven".